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# Senior Software Engineer

- **Company:** Leidos, Inc.
- **Location:** Eagan, MN, United States
- **Experience:** Expert
- **Salary:** $107,900.0 - $195,050.0
- **Contract:** Permanent contract
- **Skills:** Agile Methodology, Artificial Intelligence, C++ (Programming Language), Code Reuse, Code Review, Communications Protocols, Corona (Software Development Kit), Fault Tolerance, Linux System Administration, Object-Oriented Software Development, Red Hat Enterprise Linux, Release Management, Software Engineering, Software Requirements Analysis, Software Systems, Software Testing Automation Framework, Systems Integration, TCP/IP, Virtual Machines, Multithreading, Safety Critical Systems, Infrastructure Automation Frameworks, Information Technology, Operational Systems, Stream Control Transmission Protocol, Software Version Control, Devsecops
- **Published:** August 20, 2026
- **Apply:** https://www.juju.com/job/00000000gnxbj1

## About the Role

+ Bachelor's degree in Computer Science or related field with **4-8 years of relevant experience**

 + OR Master's degree with 2-6 years of relevant experience

 + Ability to obtain and maintain a **Public Trust clearance**

 + Strong object-oriented programming experience

 + Proficiency in **C and/or C++**

 + Experience developing **real-time, multi-threaded, high-availability systems**

 + Experience with Linux environments (Red Hat), virtual machines, and hypervisors

 + Experience with low-level communications protocols (TCP/IP, UDP, SCTP)

 + Experience with hardware or complex system integration

 + Familiarity with system maintenance and lifecycle concepts

 + Experience with source control and configuration management tools

 + Strong understanding of modern software development principles and best practices

 + Ability to plan and prioritize work effectively in a fast-paced environment

 + Strong verbal and written communication skills

 + Demonstrated ability to work independently and collaboratively

 + US Citizenship Required

Preferred Qualifications

 + Experience with **Ada**

 + Experience with test automation frameworks

 + Familiarity with AI coding tools and agents (Codex, Claude, or similar)

 + Experience with Agentic and AI-assisted development workflows, including vibe coding

 + Familiarity with AI-enabled CI/CD, testing, code review, and DevSecOps

 + Understanding of AI-generated code validation, security, and responsible use

Why Leidos

You'll contribute to software systems where reliability, performance, and precision are essential. This is an opportunity to work on mission-critical infrastructure supporting national airspace operations - collaborating with experienced engineers to modernize complex, real-world systems.

If you are motivated by solving technically challenging problems in regulated, operational environments, we encourage you to apply.

## Description

Leidos is seeking a **Software Engineer** to be based in **Gaithersburg, MD; Eagan, MN; or Egg Harbor, NJ.** This position will support the United Kingdom National Airspace System Replacement Product Delivery Team - UK NASR PDT. This effort delivers enhanced capabilities to replace and modernize the current operational system supporting UK air traffic services.

You will join a dynamic engineering team responsible for building and sustaining **real-time, high-availability, safety-critical systems** that directly support national airspace operations.

Location

This is a U.S.-based position that offers a balanced 50% hybrid schedule between 2-3 days in the office per week.

What You'll Do

 + Design, develop, test, and maintain software for real-time, high-availability systems

 + Lead software development activities independently and as part of a collaborative engineering team

 + Analyze complex system requirements and translate them into efficient, maintainable software designs

 + Apply sound software engineering principles to ensure code is reliable, fault tolerant, reusable, and maintainable

 + Lead and mentor junior developers, influencing technical direction and development processes

 + Participate in Agile ceremonies including daily stand-ups, release planning, and sprint reviews

 + Develop, tune, document, and deploy automation scripts across development, test, and production environments

 + Promote code reuse, cross-program collaboration, and sustainable development practices

 + Support system integration activities, including hardware and low-level communications interfaces


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